<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <button id="connect">连接服务端</button>
  <button id="send" disabled>发送数据</button> <br />
  从服务端接收的数据如下: <br />
  <span id="recv"></span>

  <script>
    var connect = document.querySelector("#connect")
    var send = document.querySelector("#send")
    var recv = document.querySelector("#recv")
    let ws = null
    connect.onclick = function () {
      ws = new WebSocket("ws://localhost:9998")
      ws.onopen = () => {
        console.log("连接服务端成功了...");
        send.disabled = false
      }
      ws.onclose = () => {
        console.log("连接服务器失败...");
        send.disabled = true
      }
      ws.onmessage = (msg) => {
        console.log("接收到从服务端发生过来的数据了");
        console.log(msg);
        recv.innerHTML = msg.data
      }
    }
    send.onclick = function () {
      ws.send(JSON.stringify({
        action: 'themeChange',
        socketType: 'themeChange',
        charName: '',
        value: 'chalk'
      }))
    }
  </script>
</body>

</html>